超时InetSocketAddress

Question

I have the following code:

socket.connect(new InetSocketAddress(serverHost, serverPort), CONNECT_TIMEOUT);

The problem is that when the DNS is not accessible the InetSocketAddress takes 45sec to timeout and return an exception ("Host in not accessible..."). I need the entire command (so the creation of InetSocketAddress and the connect to timeout earlier. I did not find a way to make the new InetSocketAddress(serverHost, serverPort) timing out earlier.

Is it possible?

PS I'm on Android but the problem is the same on other platform

Answer 1

There is no easy way. You need to run this code

socket.connect(new InetSocketAddress(serverHost, serverPort), CONNECT_TIMEOUT);

in a separate thread (i/o thread) and communicate with it from UI main thread. Once you are over your time limit - send it a terminate signal and proceeding in UI thread immediately, don't wait till it does terminate. Depending on the state, the i/o thread either dies immediately or eventually.